JPH115264A - Spiral tubular product and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To upgrade shape retentivity with easy mounting on a material to be protected and satisfactory adhesive properties, by incorporating a constitution having a tape-like heat resistant resin film for forming an inside layer of a spiral material and a tape-like heat resistant resin film for forming an adhesive layer for forming an intermediate layer and outside layer. SOLUTION: A spiral tubular product 1 is formed by disposing, for example, a tape-like heat resistant resin film 2 with adhesive to become an inside layer with the adhesive disposed at outside and spirally winding it on a lengthy shape giving member such as a heat resistant bar or pipe made of metal such as, for example, stainless steel. And, a tape-like heat resistant resin film 4 with adhesive to become an outside layer is spirally lap wound with the adhesive disposed at inside. Then, adhesive layer 3 made of both the adhesives is cured, laminated and integrated. The formed laminate is removed from the lengthy shape giving member such as a bar or pipe, and can be obtained as a molding spirally held in its shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for applications such as heaters which have good adhesion to pipes and have good thermal efficiency, and in particular, heat retention, protection and insulation of pipes for semiconductor manufacturing equipment and analytical equipment. The present invention relates to a shape-retaining spiral tubular article that can be used for purposes such as properties. Further, the present invention provides a tape-shaped heat-resistant resin film serving as an inner layer wound around a spiral and a tape-shaped heat-resistant resin film serving as an outer layer, and an adhesive interposed therebetween, and curing the adhesive. The present invention relates to a method of manufacturing a spiral tubular article to be laminated and integrated.

[0002]

2. Description of the Related Art Conventionally, in order to protect pipes and electric wires, it is generally practiced to wind an insulating adhesive tape.

[0003]

However, when the above-mentioned pipe or electric wire is provided in a narrow space between the devices, it is difficult to wind it with a tape. If further heat resistance is required, a general insulating adhesive tape
Cannot provide protection. An object of the present invention is to provide a spiral tubular article that can be easily attached to a protected object, has good adhesion, and has good shape retention, and a method for manufacturing the same.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a tape-shaped heat-resistant resin film A for forming an inner layer of a spiral material, an adhesive layer for forming an intermediate layer, and a tape for forming an outer layer. The present invention relates to a shape-retaining spiral tubular article having a configuration of a heat-resistant resin film B. Further, the present invention provides a tape-shaped heat-resistant resin film A serving as an inner layer and a tape-shaped heat-resistant resin film serving as an outer layer wound on a long shape-imparting member having the same outer shape as the protected object. B and a method of manufacturing a spiral tubular article, wherein an adhesive is disposed therebetween, and the adhesive is cured and laminated and integrated while the inner layer and the outer layer of the film are overlapped.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be listed below. 1) The above-mentioned spiral tubular article, wherein the tape-like heat-resistant resin film A forming the inner layer side of the spiral-shaped article and the tape-shaped heat-resistant resin film B forming the outer layer each have a thickness of 25 to 200 μm. 2) The spiral tubular article described above, wherein the adhesive layer is a thermosetting adhesive or a thermoplastic adhesive. 3) The spiral tubular article described above, wherein the tape-shaped heat-resistant resin film A and the tape-shaped heat-resistant resin film B are tape-shaped aromatic polyimide films.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a partial cross-sectional view of an example of a spiral tubular article cut in parallel with a spiral core. FIG.
1 is a perspective view showing an example of a spiral tubular article of the present invention. FIG. 3 is a partial perspective view showing an example of use of an example of the spiral tubular article of the present invention.

In FIG. 1, a spiral tubular article 1 having shape retention is a tape-like heat-resistant resin film A forming an inner layer of the spiral article, an adhesive layer 3 forming an intermediate layer, and an outer layer. A tape-shaped heat-resistant resin film B 4 for forming a layer is provided integrally.

In FIG. 2, a spiral tubular heater-1 having shape retention is a tape-shaped heat-resistant resin film A forming an inner layer of a spiral-shaped material, and an adhesive layer forming an intermediate layer. 3 and a tape-shaped heat-resistant resin film B 4 forming the outer layer are integrally provided.

In FIG. 3, the space between the spiral tubular objects having shape retention is pushed and expanded until the object 10 to be mounted can be inserted, and the object to be mounted 10 is inserted between the spiral tubular objects.
Next, the spiral tubular object 1 is rotated in the direction of the arrow in the figure while the mounted object 10 is maintained in that state, and the mounted object 10 is taken into the spiral tubular object 1 with this rotation. The spiral tubular article 1 can be relatively easily and quickly attached to the article to be attached 10 simply by rotating it in the axial direction, and the spiral tubular article 1 returns to its original shape after being attached. 10 can be mounted evenly and orderly. Therefore, for example, even when both ends of the mounted body are connected to a large-sized device or the like and there is little freedom, the mounted body 10 can be relatively easily and quickly.
Can be wrapped around. In addition, since the diameter of the spiral tubular object can be arbitrarily set, not only the mounted body having a small degree of freedom but also the mounted body having a large degree of freedom, and the rod or the rod is not limited by the size of the diameter. If it is a pipe, it can be applied to any protected object.

[0010] The spiral tubular article of the present invention is, for example,
A tape-shaped heat-resistant resin film A with an adhesive serving as an inner layer is spirally wound around a long shape-imparting member such as a heat-resistant rod or pipe made of metal, for example, stainless steel, with the adhesive outside. A tape-shaped heat-resistant resin film B with an adhesive serving as an outer layer is spirally layered on the adhesive with the adhesive inside, and the adhesive is cured and laminated and integrated to form a laminated body. Is removed from a long shape-imparting member such as a rod or a pipe to obtain a molded product having a spiral shape. The adhesive may be provided on both the tape-shaped heat-resistant resin A and the tape-shaped heat-resistant resin B, or may be provided on only one of them. The spiral tubular article of the present invention has almost the same shape and uniformity as the outer diameter of the spiral article even at an ordinary temperature, preferably in an environment heated to a high temperature of about 200 ° C., and even after the spiral article is attached to the object. No change in shape is maintained.

The tape-shaped heat-resistant resin film A for forming the inner layer of the spiral material in the present invention is preferably made of an aromatic polyimide or aromatic polyamide having a glass transition temperature or a melting point of 180 ° C. or more. Is a tape-like film having a thickness of 25 to 200 μm and a width of 3 to 50 mm. In particular, the coefficient of linear expansion (CTE) at 50-300 ° C. is 60 × 10 ⁻⁵ cm / cm / ° C. (p
pm).
50 × 10 ⁻⁵ cm / cm / ° C. and a tensile modulus of 2
An aromatic polyimide film or an aromatic polyamide film having a weight of 00 to 1400 kg / mm ² is preferably used. Among them, an aromatic polyimide film having a water absorption of 4% or less, particularly 3% or less is suitably used.

The aromatic polyimide is, for example, 3,
Aromatic tetracarboxylic dianhydrides such as 3 ', 4,4'-biphenyltetracarboxylic dianhydride, pyromellitic dianhydride and 3,3', 4,4'-benzophenone tetracarboxylic dianhydride And p-phenylenediamine,
It is obtained by polymerizing and imidizing an aromatic diamine such as 4,4'-diaminodiphenyl ether. In particular, an aromatic polyimide obtained by using 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride in an amount of 15 mol% or more in the aromatic tetracarboxylic acid component has heat resistance, low linear expansion coefficient, It is preferable because of its low water absorption. The aromatic polyamide is, for example, 2-chloroterephthalic acid chloride, aromatic acid chloride such as 2,5-dichloroterephthalic acid chloride and 2-chloro-p-ferylenediamine,
It is obtained by reaction with an aromatic diamine such as 4,4'-diaminodiphenyl ether.

In the present invention, the adhesive layer forming the intermediate layer comprises a heat-resistant thermoplastic adhesive, a thermosetting adhesive, preferably a thermosetting adhesive. 2-100 μm in thickness and 3-50 in width in dry state
mm. The adhesive layer may be provided as a tape-like film with an adhesive, or after the tape-like film is wound, an adhesive is applied or an adhesive sheet is adhered to the tape. -May be provided.

As the thermosetting adhesive, epoxy resin, NBR-phenol resin, phenol-butyral
Epoxy resin, epoxy-NBR resin, epoxy-phenolic resin, epoxy-nylon resin, epoxy-polyester resin, epoxy-acrylic resin, acrylic resin, polyamide-epoxy-phenolic resin,
Examples include a polyimide resin and a polyimidesiloxane-epoxy resin. Examples of the thermoplastic adhesive include a polyamide resin, a polyester resin, a polyimide resin, and a polyimidesiloxane resin. The adhesive is preferably provided on one side of the tape-shaped heat-resistant resin film A and on one side of the tape-shaped heat-resistant resin film B, respectively.

The heat-resistant resin film B for forming the outer layer in the present invention is made of aromatic polyimide, aromatic polyamide, aromatic polyester, fluororesin or aromatic polyamideimide having a glass transition temperature or melting point of 180 ° C. or more. And preferably have a thickness of 25-200
A tape-like film having a thickness of 3 μm and a width of 3 to 50 mm is used. In particular, when the coefficient of linear expansion (CTE) at 50 to 250 ° C. is not more than 60 × 10 ⁻⁵ cm / cm / ° C. (may be expressed in ppm), especially at 3 to 50 × 10 ⁻⁵ cm / cm / ° C. In addition, an aromatic polyimide film or an aromatic polyamide film having a tensile modulus of 200 to 1400 kg / mm ² is preferably used. Among them, an aromatic polyimide film having a water absorption of 4% or less, particularly 3% or less is suitably used.

The above-mentioned aromatic polyimide film can be produced, for example, as follows. First, the aromatic tetracarboxylic dianhydride and the aromatic diamine are polymerized in an organic polar solvent such as N, N-dimethylacetamide or N-methyl-2-pyrrolidone, and the logarithmic viscosity of the polymer (measurement temperature: 30 ° C, concentration: 0.5g / 100m
1 solvent, solvent: N-methyl-2-pyrrolidone) is 1 to 5
A polyamic acid (imidation ratio: 5% or less) solution having a polymer concentration of 15 to 25% by weight and a rotational viscosity (30 ° C.) of 500 to 4500 poise is obtained. Then, preferably 100 parts by weight of the polyamic acid is 0.0%
1 to 1% by weight of a phosphorus compound, for example an organic or inorganic phosphorus compound such as a (poly) phosphate ester and / or an amine salt of a phosphate ester, and preferably 0 to 100 parts by weight of polyamic acid. .02
~ 6 parts by weight of colloidal silica, silicon nitride, talc,
Inorganic fillers such as titanium oxide and calcium phosphate (preferably having an average particle size of 0.005 to 5 μm, particularly 0.005 to 2 μm)
μm) to prepare a polyamic acid solution composition. The polyamic acid solution composition as it is or with the addition of a chemical imidizing agent is cast on a support having a smooth surface, dried, and the solidified film is peeled from the support. Next, after one or both surfaces of the solidified film are coated with a surface treatment solution containing an aminosilane-based, epoxysilane-based or titanate-based surface treatment agent, the film can be further dried. The solidified film obtained as described above is stretched in both directions, if necessary, and then heated at a temperature within the range of 350 to 500 ° C. while holding both edges in the width direction of the dried film. After drying and imidization, it can be suitably produced as an aromatic polyimide film. The aromatic polyimide film obtained as described above is preferably heated under a low tension or no tension at a temperature of about 200 to 400 ° C., subjected to a stress relaxation treatment, and wound up. This aromatic polyimide film, as it is or corona discharge treatment, plasma treatment,
After surface treatment by ultraviolet irradiation, glow discharge treatment, and flame treatment, it can be used as an aromatic polyimide film having improved adhesiveness.

The above-mentioned aromatic polyamide film can be produced, for example, as follows. The aromatic acid chloride and the aromatic diamine are synthesized by solution polymerization in an organic polar solvent or by interfacial polymerization using an aqueous medium. When acid chloride and diamine are used as monomers for the polymer solution, hydrogen chloride is produced as a by-product, so that it is neutralized by using an inorganic neutralizer such as calcium hydroxide or an organic neutralizer such as ethylene oxide. Add the agent. The reaction between the isocyanate and the carboxylic acid is carried out in an aprotic organic polar solvent in the presence of a catalyst. These polymer solutions may be used directly as a stock solution for forming a film, or the polymer may be isolated once and then redissolved in the above solvent to prepare a stock solution. An inorganic salt such as calcium chloride or magnesium chloride may be added as a dissolution aid to the film forming stock solution. The polymer concentration in the film forming stock solution is preferably from 2 to 35% by weight.

The shape-retaining spiral tubular article of the present invention has, for example, the same outer shape as the object to be protected (shape is
It may have any shape such as a circular or square cross section. ) A tape-shaped heat-resistant resin film A to be an inner layer spirally wound around a long shape-imparting member, for example, a heat-resistant rod or pipe, preferably a tape-shaped aromatic polyimide film A
And a tape-like heat-resistant resin film B, preferably a tape-like aromatic polyimide film B, which is to be an outer layer having the same width or a slightly narrower width, and an adhesive disposed between the tape-like heat-resistant resin film B and the thermosetting adhesive. In such a case, the solvent is dried to a stage B, and in the case of a thermoplastic adhesive, the laminate is heated to a temperature higher than the glass transition temperature or the melting point by applying pressure to the laminate.
With the inner and outer layers of the film stacked, heat the adhesive to a temperature above the curing temperature for a thermosetting adhesive, or cool it for a thermoplastic adhesive to cure the adhesive. After lamination and integration, it is obtained by removing the spiral laminate from the elongated shape imparting member.

The above method can be preferably carried out, for example, as follows. First, an adhesive is applied to one surface of the heat-resistant resin film A and the heat-resistant resin film B to be the inner layers, to obtain a film having a dry thickness of the adhesive of 2 to 100 μm. This film is slit into 3 to 50 mm to produce a tape-like heat-resistant resin film with a thermosetting adhesive. This tape-shaped film A is spirally wound around a circular rod or pipe having a diameter of 5 to 50 mm with the adhesive side facing out, and both ends are fixed. Next, a tape-shaped heat-resistant resin film B with a thermosetting adhesive as an outer layer is wound thereon so that the adhesives overlap each other,
Tape-shaped heat-resistant resin film A / thermosetting adhesive / tape
Heat-resistant resin film B is formed, and if necessary, the surroundings are pressed and fixed with a tape-shaped or linear-shaped material, and heated to a temperature in the range of 150 to 400 ° C. After the adhesive is hardened and laminated and integrated, and cooled, the formed laminate is removed from the rod or pipe to obtain a spiral tubular article.

The spiral tubular article of the present invention may be applied as it is to a body to be protected, or may be used after being cut into an appropriate length, and the outermost layer is provided with a heat-resistant foam for heat insulation. Or a heat-resistant porous sheet. In the case of a protected object having a complicated shape, the protected object may be covered by using a combination of a spiral tubular object and a planar tape.

[0021]

Embodiments of the present invention will be described below. In each of the following examples, the physical properties of the polyimide film were measured by the following methods. Water absorption: measured according to ASTM D570-63 (23
° C × 24 hours) Tensile modulus: Measured according to ASTM D882-64T (MD) Linear expansion coefficient (50-250 ° C or 50-300 ° C):
Samples that were heated at 300 ° C for 30 minutes and relaxed
A device (tensile mode, 2g load, sample length 10mm, 2
0 ° C / min)

REFERENCE EXAMPLE 1 N, N-dimethylacetamide (54.6 kg) was added to a polymerization tank having an inner volume of 100 liters.
4,4'-biphenyltetracarboxylic dianhydride 8.8
26 kg and 3.243 kg of paraphenylenediamine are added and polymerized at 30 ° C. for 10 hours, and the logarithmic viscosity of the polymer (measuring temperature: 30 ° C., concentration: 0.5 g / 100 ml solvent, solvent: N, N-dimethyl) Acetamide)
Was 1.60, and a polyamic acid (imidization ratio: 5% or less) solution having a polymer concentration of 18% by weight was obtained. In this polyamic acid solution, monostearyl phosphate triethanolamine salt at a ratio of 0.1 part by weight to 100 parts by weight of the polyamic acid and an average particle diameter of 0 part by weight (based on solid content) of 0.5 part by weight. 0.08 μm of colloidal silica was added and uniformly mixed to obtain a polyamic acid solution composition. The rotational viscosity of this polyamic acid solution composition was 30.
It was 00 poise. This polyamic acid solution composition is continuously extruded from a lip of a T-die mold onto a smooth support of a casting / drying furnace to form a thin film of the solution, dried at 130 ° C. for 10 minutes, and peeled from the support. While holding in the width direction, cure in a curing furnace (200
To 450 ° C. for about 20 minutes) to obtain an aromatic polyimide film having a thickness of 75 μm. This film has an elastic modulus of 750 kg / mm ² and a linear expansion coefficient (50-300).
C.) was 16 ppm and the water absorption was 1.5%.

REFERENCE EXAMPLE 2 Reference example 1 was repeated except that paraphenylenediamine was replaced with 6,007 kg of 4,4'-diaminodiphenyl ether and 67.6 kg of N, N-dimethylacetamide.
In the same manner as in the above, an aromatic polyimide film having a thickness of 75 μm was obtained. This film has an elastic modulus of 370 kg / m.
m ² , linear expansion coefficient (50 ° C to 250 ° C) 40pp
m, and the water absorption was 2.5%.

Reference Example 3 An aromatic polyimide film having a thickness of 125 μm was obtained in the same manner as in Reference Example 1, except that the lip of the T-die was changed. This film had an elastic modulus of 690 kg / mm ² , a coefficient of linear expansion (50-300 ° C.) of 18 ppm, and a water absorption of 1.6%.

Example 1 A solution of a polyimidesiloxane-based thermosetting adhesive (comprising a polyimidesiloxane, an epoxy resin, a phenolic resin and a curing catalyst) in a tetrahydrofuran solution (solid (A concentration of 25% by weight) was applied so that the thickness after drying was 30 μm, and dried at 100 ° C. to obtain a polyimide film with an adhesive. This film is 10 mm wide and 9 m wide.
Two types of tapes with an adhesive were prepared by slitting to a width of m. A 10 mm wide tape with an outside diameter of 1 with the adhesive layer on the outside
After being spirally wound around a 0 mm stainless steel round bar, both ends were fixed, and a tape of 9 mm width was further spirally wound thereon, and both ends were fixed. The laminate is heated and cured in an oven at 100 ° C. for 1 hour, at 200 ° C. for 1 hour, and at 250 ° C. for 1 hour without applying any particular pressure, and then left to cool to form a laminate spiral. The material was removed from the stainless steel round bar to obtain a spiral tubular material having a length of 100 cm. This spiral tubular article was measured for elongation by applying a load of 250 g in the longitudinal direction, and found to be 48%.
It could be easily wound around a round bar of mm. At this time, the spiral tubular article could be mounted evenly and orderly. The spiral tube was placed in a high-temperature bath at 220 ° C. and heat-treated, and the outer diameter before and after the heat treatment was measured. It was 10.3 mm before heat treatment and 10.4 mm after heat treatment.

Example 2 A spiral tubular article was obtained in the same manner as in Example 1 except that the 75 μm aromatic polyimide film produced in Reference Example 2 was used instead of the aromatic polyimide film produced in Reference Example 1. This spiral tubular material has a length of 250 mm.
After a load of g was applied, the load was removed and the original state was restored, and it was possible to easily wind a spiral rod around a round bar having an outer diameter of 10 mm. At this time, the spiral tubular article could be mounted evenly and orderly. The spiral tube was placed in a high-temperature bath at 220 ° C. and heat-treated, and the outer diameter before and after the heat treatment was measured. It was 10.3 mm before heat treatment and 10.2 mm after heat treatment.

Example 3 A 6 mmφ stainless steel rod was used, the thickness of the adhesive after drying was changed to 20 μm, and 6 mm width and 5.5 mm width tapes obtained from the aromatic polyimide film according to Reference Example 2 were used. The heating conditions were 250 ° C. for 2 hours and 320 ° C. for 2 hours.
Except that the time was changed to 0 minutes, the same operation as in Example 1 was performed, and the inner diameter was 6 m.
A spiral tubular heater having a length of 100 cm and a length of 100 cm was obtained.
After applying a load of 250 g in the elongate direction, the spiral tube returns to its original state without the load, and has an outer diameter of 6 g.
It could be easily wound spirally around a round bar of mm. At this time, the spiral tubular article could be mounted evenly and orderly. Similarly, when it was spirally wound around a pipe bent at a right angle of 15R with a diameter of 6 mm, it could be mounted evenly and orderly. The spiral tube heater was placed in a high-temperature bath at 280 ° C., and the outer diameter before and after the heat treatment was measured. It was 6.3 mm before the heat treatment and 6.2 mm after the heat treatment.

Example 4 A 10 mm wide tape obtained from the aromatic polyimide film according to Reference Example 2 was used for the inner layer, and a 9 mm width tape obtained from the aromatic polyimide film according to Reference Example 1 was used as the outer layer.
The same procedure as in Example 3 was carried out except that a loop was used.
m, a spiral tubular article having a length of 100 cm was obtained. After applying a load of 250 g in the longitudinal direction, the spiral tube returns to its original state without the load, and has an outer diameter of 6 mm.
Could be easily wound around a round bar. At this time, the spiral tubular article could be mounted evenly and orderly. The spiral tube was placed in a high-temperature bath at 220 ° C. and heat-treated, and the outer diameter before and after the heat treatment was measured.
It was 5.9 mm before heat treatment and 6.1 mm after heat treatment.

Example 5 The thickness of the adhesive after drying was changed to 30 μm using a stainless steel rod of 8 mmφ, and a 10 mm wide sheet obtained from the aromatic polyimide film according to Reference Example 3 was used. The same procedure as in Example 1 was carried out except that the temperature was changed to 250 ° C. for 2 hours and 320 ° C. for 30 minutes.
m spiral tube was obtained. This spiral tubular article was measured for elongation by applying a load of 250 g in the longitudinal direction and found to be 27%. When the load was removed, it returned to its original state, and it could be spirally wound around a round bar with an outer diameter of 8 mm. It was easy. At this time, the spiral tubular article could be mounted evenly and orderly. The spiral tube was placed in a high-temperature bath at 220 ° C. and heat-treated, and the outer diameter before and after the heat treatment was measured. 8.3 mm before heat treatment, 8.4 after heat treatment
mm.

Example 6 A 10 mm wide tape obtained from the aromatic polyimide film according to Reference Example 3 was used for the inner layer, and a 9 mm width tape obtained from the aromatic polyimide film according to Reference Example 1 was used as the outer layer.
The same procedure as in Example 5 was carried out except that a tape was used.
A spiral tube having a length of 100 cm and a length of 100 mm was obtained. This spiral tubular article was measured for elongation by applying a load of 250 g in the longitudinal direction and found to be 40%. When the load was removed, it returned to its original state, and it could be spirally wound around a round bar with an outer diameter of 8 mm. It was easy. At this time, the spiral tubular article could be mounted evenly and orderly. In addition, this spiral tubular material is placed in a high-temperature bath at 220 ° C. and heat-treated.
The outer diameter before and after the heat treatment was measured. 10.3m before heat treatment
m and 10.4 mm after heat treatment.

Example 7 A tape having a width of 10 mm with an adhesive was spirally wound around a stainless steel round bar having an outer diameter of 10 mm, and both ends were fixed. A spiral tube was obtained in the same manner as in Example 1 except that a tape obtained by slitting an aromatic polyimide film into a width of 9.8 mm was spirally wound. After applying a load of 250 g in the longitudinal direction, the spiral tubular article returned to its original state without the load, and could be easily wound spirally around a round bar having an outer diameter of 10 mm. At this time, the spiral tubular article could be mounted evenly and orderly. Also, put this spiral tube in a high temperature bath at 220 ° C,
After heat treatment, the outer diameter before and after the heat treatment was measured. 1 before heat treatment
0.2 mm and 10.3 mm after heat treatment.

[0032]

Since the present invention is configured as described above, the following effects can be obtained. The spiral tubular article of the present invention has shape retention properties and good adhesion to a pipe. In addition, it can be easily and evenly mounted on the body to be mounted.

According to the production method of the present invention, it is possible to obtain a spiral tubular article having an arbitrary inner diameter and having good shape retention and heat resistance.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of an example of a spiral tubular article cut in parallel with a spiral core.

FIG. 2 is a perspective view showing an example of a spiral tubular article of the present invention.

FIG. 3 is a partial perspective view showing an example of use of an example of the spiral tubular article of the present invention. DESCRIPTION OF SYMBOLS 1 Spiral tubular material 2 Tape-shaped heat-resistant resin film A which forms an inner layer 3 Adhesive layer which forms an intermediate layer 4 Tape-shaped heat-resistant resin film B which forms an outer layer 10 Body to be mounted

(72) Inventor Kenji Sonoyama 10 Ube Kosan Co., Ltd. Ube Chemical Factory at 1978 Kogushi, Obe City, Ube City, Yamaguchi Prefecture

Claims (5)

[Claims] 1. A tape forming an inner layer of a spiral material.
Heat-resistant resin film A, adhesive layer forming intermediate layer and tape-shaped heat resistant resin film B forming outer layer
Spiral tubular article having shape retention having the following configuration. 2. The tape-shaped heat-resistant resin film A and the tape-shaped heat-resistant resin film B each have a thickness of 25-20.
The spiral tubular article according to claim 1, which has a thickness of 0 µm. 3. The spiral tubular article according to claim 1, wherein the tape-shaped heat-resistant resin film A and the tape-shaped heat-resistant resin film B are each a tape-shaped aromatic polyimide film. 4. The spiral tubular article according to claim 1, wherein the adhesive is a thermosetting adhesive or a thermosetting adhesive. 5. A tape-shaped heat-resistant resin film A serving as an inner layer and a tape-shaped heat-resistant resin film serving as an outer layer wound on a long shape-imparting member having the same outer shape as the protected body. B. A method for producing a spiral tubular article, comprising: disposing an adhesive between B and an adhesive; curing the adhesive while laminating the inner layer and the outer layer of the film;